About: Rubin is considered one of the most powerful and extraordinary demons from the Shokushu Dimension. He lives on a mysterious island covered by ice where fierce blizzards reign and no one but him can survive there. When visiting other places in the Haremverse, he aims to keep his dick warm by destroying some hot asses.
Parody Info: Guy Crimson (That Time I Got Reincarnated As A Slime)
A variant of one of the one-stars, thus his outfit doesn't really matches Guy's. Rubin's hair is blond rather than red, and he lacks tattoos below his eyes. Like Guy, he is also a powerful demon who lives in an extremely cold region.
